SMU BSC IT SEM -2 FALL 2014 SOLVED ASSIGNMENTS

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ASSIGNMENT

PROGRAM	BSc IT
SEMESTER	SECOND
SUBJECT CODE & NAME	BT0068, Computer Organization and Architecture
CREDIT	4
BK ID	B0952
MAX.MARKS	60

1. Subtract (76425-28321) using 10’s complement. Show the steps. 2. Subtract (28531-345620) using 10’s complement. Show the steps.

2 What do you mean by bus in computer system? Explain the bus structure.

3 Explain the instruction format with diagram and examples.

4 Explain the non-negative integers and negative integers representation.

5 Explain the mapping functions between the main memory and CPU.

6 Write a short note on DMA controller. Draw the diagram of it.

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ASSIGNMENT

PROGRAM	BSc IT
SEMESTER	SECOND
SUBJECT CODE & NAME	BT0070, Operating Systems
CREDIT	4
BK ID	B0954
MAX.MARKS	60

1 Describe the mechanism of process creation in an OS.

2 Suppose that the following processes arrive for execution at the

times indicated.

Process Burst Time

P1 24

P2 3

P3 3

1. Suppose the process arrives in the order P1, P2, P3 and

2. Suppose the process arrive in the order P2, P3, P1.

For both the above situation draw the Grantt Chart and calculate the waiting time for each process and average waiting time.

3 Write short notes on:

1. Critical section problem

2. Buffering

4 What are TLBs? Why they are required in paging?

5 Describe the techniques of free space management of free space list.

6 What are computer viruses? How do they affect our system?

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ASSIGNMENT

PROGRAM	BSc IT
SEMESTER	SECOND
SUBJECT CODE & NAME	BT0072, COMPUTER NETWORKS
CREDIT	4
BK ID	B0956
MAX.MARKS	60

1 What is Message switching and Packet switching?

2 What is Framing? Briefly explain Fixed-Size Framing, Variable Size Framing,

3 What is Stop-and-Wait Automatic Repeat Request? Briefly explain.

4 What is the role of Internet Protocol version 4 (IPV4) in addressing and routing packets between hosts? Briefly explain the structure of an IPV4 packet.

5 How SMTP works? Briefly explain applications of SMTP.

6 What is SSL protocol? How SSL handles a message?

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